I- -66 Spot Improvement Design Study 66 Spot Improvement Design Study I
1 • Spot Improvement Results • Feasibility Study Results Agenda Agenda • Next Steps • Overview
I - -66 I nside the Beltway 66 I nside the Beltway I • July 2004 – Idea-66 Feasibility Study Initiated • Governor Warner directed VDOT to work with FHWA to conduct a study looking at four initial concepts for WB I-66. • No build • HOV/ HOT Concepts • Transit Concepts • Widening Concepts 2
Governor Warner’s Letter Governor Warner’s Letter “…develop a context-sensitive solution to the mobility and community problems.” “…open, inclusive process that involves citizens and businesses from Arlington and Fairfax, as well as other interests and concerns from around the region.” “…any improvements recommended as a result of this community-based planning process be located within the existing right-of-way and consider all realistic options.” 3
Problem Statement Problem Statement • Relieve Congestion On WB I-66 • Relieve Congestion on Parallel Roads • Improve Activity Center Accessibility • Maintain Economic Vitality • Improve Emergency Evacuation • Maintain Existing R/W 4
Public Outreach Update Public Outreach Update • Public Meetings – 18 Interviews with Community Leaders – 11 Community Dialogues – 2 Public Workshops – 1 Open House • Newsletters – 42,000 Recipients – 2 Publications 5
Additional Community I nvolvement Additional Community I nvolvement • Web Site – www.IDEA66.com • Toll Free INFO Line • Question of the Week • Various Comment Forms • Newspapers • Advertisements • Telephone Survey 6
Recommendations Recommendations • FHWA and VDOT recommended the following based on the Public Outreach during the Feasibility Study • Conduct Interim Improvements Study – Commonwealth Transportation Board Approval July 2005 – Transportation Planning Board Approval January 2006 • Conduct Multimodal Environmental Study – FHWA, DRPT and VDOT – Funding to be Identified – Commonwealth Transportation Board Approval Needed 7
Spot I mprovements Spot I mprovements Spot Description Comments Improvement Lane Balancing – Fairfax Drive on-ramp to Sycamore Street 1 Became Improvements 1A and 1B off-ramp Lane Balancing – Sycamore St/Washington Blvd on-ramp to 2 Became Improvements 2A – 2C DAAR off-ramp Lane Balancing – Lee Hwy/Spout Run on-ramp to Glebe 3 Became Improvement 3 Road off-ramp Lane Balancing – Scott Street on-ramp to Lee Highway Became Improvement 4 (Extension of 4 on-ramp Improvement 3) 5 Enforcement Areas/Safety Pull-off Areas Will Be Included in Design 6 Reconstruct Outside Shoulder Will Be Included in Design 7 Add lane to Sycamore St/Washington Blvd on-ramp Included in #2 Above 8 Signing Evaluation Study Signing Evaluated in Design 9 Traffic Management System (TMS) Evaluation Study On-going Study 10 Sight Distance Improvement Study Will Be Included in Design 11 Optimize Signalization for Parallel Roadways Study Updated Yearly by Arlington County 12 Evaluate Ramp Metering Study Will Be Included in Design 8
Spot I mprovement Locations Spot I mprovement Locations 9
Traffic Simulation Modeling Traffic Simulation Modeling • Evaluated Data Collected in Phase I and Refined for Corridor Model – Windshield Surveys – Digital License Plate Surveys – Turning Movement Counts – Ramp Counts • Future Growth Projected by MWCOG Data 10
VI SSI M Model Development VI SSI M Model Development • Developed VISSIM Model – Detailed Corridor Operation Model that Simulates Travel Behavior – Allows for Detailed Analysis of Congestion, Delay and Other Measures in Corridor – Greatly Enhances Understanding of Spot Improvements – Data Can Be Used to Refine and Prioritize Spot Improvement 11
Spot I mprovements Analyzed Spot I mprovements Analyzed 12
Spot I mprovements Analyzed Spot I mprovements Analyzed 13
Spot I mprovements Analyzed Spot I mprovements Analyzed 14
Results Results • All Spot Improvements Provide Mobility and Access Benefits – Mainline Improvements All Increase Average Speeds in AM and PM – Mainline Improvements Reduce Speed Variability In Corridor – Mainline Improvements Reduce Travel Times in AM and PM – Mainline Improvements Do Not Increase Congestion on Parallel Routes and Intersections 15
Results Results • Improvement 1B Provides Highest Mobility Benefit of Mainline Spot Improvements • Improvements 2A-2C Provide Local Network Benefits to Washington Boulevard, Sycamore and Route 29 – Improvement 2A is Easiest to Implement • Improvement 3 Provides Mobility Benefits and Improved Emergency Evacuation • Improvement 4 Provides Mobility Benefits and Improved Emergency Evacuation, however is difficult to construct due to proximity to National Park 16
Recommendations Recommendations • Spot Improvements to Proceed Into Preliminary Design – 1B - Extend accel Lane Fairfax Dr to Sycamore St, – 2A - Extend Washington Blvd to Dulles Airport Access Highway and, – 3 - Extend Route 29 (Spout Run) to Glebe Rd. • Additional Spot Improvements Within Limits of 1B, 2A and 3 – 5 – Enforcement Areas/ Safety Pull-Off Areas – 6 – Reconstruct Outside Shoulder – 8 – Signing Improvements – 9 – TMS Improvements – 10 – Sight Distance Improvements – 12 – Ramp Metering Upgrades 17
I mplementation I ssues I mplementation I ssues • Safety Enhanced By Spot Improvements – Weaving and Merging Areas Lengthened – Speed Fluctuation Decreases – Improved LOS Reduces “stop and go” Crashes – Additional Storage Capacity For Incidents on Mainline – Travel Time Reductions for Emergency Responders • Spot Improvements Do Not Preclude Future Long Term Alternatives such as: – Addition of Express Bus Lane, or – Addition of Future Rail Line, or – Addition of Future Managed Lane 18
I mplementation I ssues I mplementation I ssues • Spot Improvements do not Impact Dulles Rail • ROW Has Been Verified Using As-Built Plans and Improvements Can Occur within ROW • Trails Will be Maintained • Spot Improvements Improve Emergency Evacuation • Spot Improvements Will Be Constructed with Full Width Shoulders with the Exception of Two Locations (Westover and Ohio Drive) to Avoid Right of Way Impacts 19
FUNDI NG FUNDI NG • Spot 1 - Extend accel Lane from Fairfax Drive to Sycamore Street – Preliminary Engineering - $3.6M – Fully Funded – Construction - $28M – Fully Funded • Spot 2A - Extend accel lane from Washington Blvd to Dulles Airport Access Highway and widen Washington Blvd on ramp to two lanes – Preliminary Engineering - $3.4 M – Fully Funded – Construction - $26.5M – Partially Funded ($21M Unfunded) • Spot 3 - Extend accel lane from Lee Highway (Spout Run) to Glebe Road – Preliminary Engineering - $1.6M – Fully Funded – Construction - $12.5M - Unfunded 20
Spot I mprovements Next Steps Spot I mprovements Next Steps 21
Welcome to the Idea-66 Café 22
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